MARION OLIVER
NPI 1497106439
Psychiatry & Neurology - Neurology in Grand Rapids, MI
About Marion Oliver NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARION OLIVER (NPI 1497106439) is an individual neurology provider in Grand Rapids, Michigan, licensed in Michigan (4301110799) and active in the NPI registry since June 2016. He is enrolled in Medicare PECOS, is affiliated with Advocate Sherman Hospital, and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Marion Oliver is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Marion Oliver reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- Also billed through NPI 1235188673 (Michigan)
- 2,446 clinicians in this Medicare group
Chicago, IL 60657
- Reassigned Medicare billing, Illinois enrollment
- 4,870 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 8
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Sherman Hospital
Acute Care Hospitals · Elgin, ILAdvocate Lutheran General Hospital
Acute Care Hospitals · Park Ridge, ILSpectrum Health
Acute Care Hospitals · Grand Rapids, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAND RAPIDS, MI 49503
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Marion Oliver's NPI number?
The NPI number for Marion Oliver is 1497106439. It was assigned to this individual provider in the NPPES registry on June 30, 2016.
Where is Marion Oliver located?
Marion Oliver practices at 275 Michigan St NE, Grand Rapids, MI 49503. The listed phone number is (616) 267-7900.
What is Marion Oliver's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Marion Oliver enrolled in Medicare?
Yes. Marion Oliver is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Marion Oliver's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marion Oliver reassigns Medicare benefits to 2 organizations: Spectrum Health Primary Care Partners (Grand Rapids, MI) and Advocate Health And Hospitals Corp. (Chicago, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marion Oliver's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marion Oliver accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 2 other insurers list Marion Oliver as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Marion Oliver affiliated with any hospitals?
According to CMS data, Marion Oliver is affiliated with Advocate Sherman Hospital, Advocate Lutheran General Hospital and Spectrum Health.
When was this NPI record last updated?
The NPPES record for Marion Oliver was last updated on January 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Marion Oliver · NPI 1497106439
Neurology physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since June 30, 2016.
## Identity
- **NPI:** 1497106439 (Entity type: Individual)
- **Enumerated:** June 30, 2016
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 4301110799 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 275 MICHIGAN ST NE, Grand Rapids, MI 49503-2531
- **Phone:** (616) 267-7900
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Spectrum Health Primary Care Partners (NPI 1689499667, Grand Rapids, MI); Advocate Health And Hospitals Corp. (NPI 1487951711, Chicago, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** January 6, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1497106439) · Data from the CMS NPPES public registry.